ZIP Code 57661

ZIP code 57661 is classified by USPS as a standard delivery area and covers roughly 55.0 square miles in Whitehorse, Dewey County, South Dakota. The area is home to 88 residents, producing a population density of 2 people per square mile, and falls within the Denver time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 57661 against South Dakota and the nation.

On the economic side, the median household income for ZIP 57661 sits at $55,000 (28% below the South Dakota average), while per-capita income is $14,135. The poverty rate stands at 29.4% and the unemployment rate at 29.8%. On housing, the median home value is — with median rent at $616 per month, and 28.6% of occupied units are owner-occupied — a direct signal of whether 57661 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 5.8% of adults hold a bachelor's degree or higher, the median age is 29.8, and the average commute is —. We also surface 1 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Dewey County, so you can benchmark 57661 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data — no estimates, no proprietary scoring.